./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4181d3e8-8e8f-4a1e-ad24-4ae1160e69c4/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4181d3e8-8e8f-4a1e-ad24-4ae1160e69c4/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4181d3e8-8e8f-4a1e-ad24-4ae1160e69c4/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4181d3e8-8e8f-4a1e-ad24-4ae1160e69c4/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4181d3e8-8e8f-4a1e-ad24-4ae1160e69c4/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4181d3e8-8e8f-4a1e-ad24-4ae1160e69c4/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 77b56c936ee2ca54668f40aefbb58be12afe7e576f3b6d14c65eab965872c215 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 17:07:23,452 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:07:23,455 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:07:23,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:07:23,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:07:23,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:07:23,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:07:23,509 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:07:23,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:07:23,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:07:23,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:07:23,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:07:23,520 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:07:23,521 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:07:23,522 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:07:23,523 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:07:23,524 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:07:23,525 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:07:23,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:07:23,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:07:23,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:07:23,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:07:23,544 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:07:23,545 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:07:23,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:07:23,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:07:23,557 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:07:23,559 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:07:23,560 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:07:23,561 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:07:23,561 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:07:23,562 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:07:23,564 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:07:23,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:07:23,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:07:23,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:07:23,568 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:07:23,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:07:23,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:07:23,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:07:23,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:07:23,573 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4181d3e8-8e8f-4a1e-ad24-4ae1160e69c4/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 17:07:23,617 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:07:23,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:07:23,618 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:07:23,618 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:07:23,619 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:07:23,620 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:07:23,621 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:07:23,621 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:07:23,621 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:07:23,622 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:07:23,623 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:07:23,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:07:23,623 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:07:23,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:07:23,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:07:23,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:07:23,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:07:23,625 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:07:23,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:07:23,625 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:07:23,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:07:23,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:07:23,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:07:23,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:07:23,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:07:23,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:07:23,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:07:23,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:07:23,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:07:23,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:07:23,628 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:07:23,629 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:07:23,629 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:07:23,630 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4181d3e8-8e8f-4a1e-ad24-4ae1160e69c4/bin/uautomizer-vX5HgA9Q3a/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4181d3e8-8e8f-4a1e-ad24-4ae1160e69c4/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77b56c936ee2ca54668f40aefbb58be12afe7e576f3b6d14c65eab965872c215 [2022-11-21 17:07:23,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:07:23,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:07:23,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:07:23,956 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:07:23,957 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:07:23,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4181d3e8-8e8f-4a1e-ad24-4ae1160e69c4/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c [2022-11-21 17:07:27,109 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:07:27,369 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:07:27,370 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4181d3e8-8e8f-4a1e-ad24-4ae1160e69c4/sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c [2022-11-21 17:07:27,397 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4181d3e8-8e8f-4a1e-ad24-4ae1160e69c4/bin/uautomizer-vX5HgA9Q3a/data/50d7adbb9/7ec9788f350b46f7b6e629de30da5f24/FLAG8fb5e2878 [2022-11-21 17:07:27,413 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4181d3e8-8e8f-4a1e-ad24-4ae1160e69c4/bin/uautomizer-vX5HgA9Q3a/data/50d7adbb9/7ec9788f350b46f7b6e629de30da5f24 [2022-11-21 17:07:27,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:07:27,417 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:07:27,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:07:27,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:07:27,434 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:07:27,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:07:27" (1/1) ... [2022-11-21 17:07:27,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4af03ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:07:27, skipping insertion in model container [2022-11-21 17:07:27,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:07:27" (1/1) ... [2022-11-21 17:07:27,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:07:27,534 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:07:27,742 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4181d3e8-8e8f-4a1e-ad24-4ae1160e69c4/sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c[5400,5413] [2022-11-21 17:07:27,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:07:27,872 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:07:27,923 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4181d3e8-8e8f-4a1e-ad24-4ae1160e69c4/sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c[5400,5413] [2022-11-21 17:07:27,968 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:07:27,986 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:07:27,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:07:27 WrapperNode [2022-11-21 17:07:27,987 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:07:27,988 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:07:27,988 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:07:27,988 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:07:27,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:07:27" (1/1) ... [2022-11-21 17:07:28,010 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:07:27" (1/1) ... [2022-11-21 17:07:28,054 INFO L138 Inliner]: procedures = 55, calls = 100, calls flagged for inlining = 24, calls inlined = 21, statements flattened = 201 [2022-11-21 17:07:28,056 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:07:28,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:07:28,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:07:28,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:07:28,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:07:27" (1/1) ... [2022-11-21 17:07:28,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:07:27" (1/1) ... [2022-11-21 17:07:28,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:07:27" (1/1) ... [2022-11-21 17:07:28,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:07:27" (1/1) ... [2022-11-21 17:07:28,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:07:27" (1/1) ... [2022-11-21 17:07:28,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:07:27" (1/1) ... [2022-11-21 17:07:28,081 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:07:27" (1/1) ... [2022-11-21 17:07:28,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:07:27" (1/1) ... [2022-11-21 17:07:28,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:07:28,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:07:28,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:07:28,104 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:07:28,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:07:27" (1/1) ... [2022-11-21 17:07:28,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:07:28,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4181d3e8-8e8f-4a1e-ad24-4ae1160e69c4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:07:28,157 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4181d3e8-8e8f-4a1e-ad24-4ae1160e69c4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:07:28,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4181d3e8-8e8f-4a1e-ad24-4ae1160e69c4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:07:28,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:07:28,203 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-21 17:07:28,203 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-21 17:07:28,204 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-21 17:07:28,204 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-21 17:07:28,204 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-21 17:07:28,204 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-21 17:07:28,205 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2022-11-21 17:07:28,205 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2022-11-21 17:07:28,205 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-21 17:07:28,205 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-21 17:07:28,205 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2022-11-21 17:07:28,206 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2022-11-21 17:07:28,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:07:28,206 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-21 17:07:28,206 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-21 17:07:28,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:07:28,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:07:28,298 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:07:28,300 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:07:28,619 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:07:28,627 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:07:28,628 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-21 17:07:28,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:07:28 BoogieIcfgContainer [2022-11-21 17:07:28,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:07:28,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:07:28,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:07:28,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:07:28,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:07:27" (1/3) ... [2022-11-21 17:07:28,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414e89eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:07:28, skipping insertion in model container [2022-11-21 17:07:28,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:07:27" (2/3) ... [2022-11-21 17:07:28,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414e89eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:07:28, skipping insertion in model container [2022-11-21 17:07:28,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:07:28" (3/3) ... [2022-11-21 17:07:28,639 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product40.cil.c [2022-11-21 17:07:28,685 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:07:28,685 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 17:07:28,756 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:07:28,770 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@702df566, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:07:28,770 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 17:07:28,775 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 67 states have (on average 1.3880597014925373) internal successors, (93), 76 states have internal predecessors, (93), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-21 17:07:28,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-21 17:07:28,783 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:07:28,784 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:07:28,784 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:07:28,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:07:28,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1180075740, now seen corresponding path program 1 times [2022-11-21 17:07:28,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:07:28,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561471952] [2022-11-21 17:07:28,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:07:28,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:07:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:28,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:07:28,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:07:28,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561471952] [2022-11-21 17:07:28,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561471952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:07:28,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:07:28,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:07:28,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301276676] [2022-11-21 17:07:28,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:07:29,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 17:07:29,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:07:29,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 17:07:29,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 17:07:29,064 INFO L87 Difference]: Start difference. First operand has 88 states, 67 states have (on average 1.3880597014925373) internal successors, (93), 76 states have internal predecessors, (93), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:07:29,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:07:29,126 INFO L93 Difference]: Finished difference Result 168 states and 229 transitions. [2022-11-21 17:07:29,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 17:07:29,128 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-21 17:07:29,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:07:29,140 INFO L225 Difference]: With dead ends: 168 [2022-11-21 17:07:29,140 INFO L226 Difference]: Without dead ends: 79 [2022-11-21 17:07:29,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 17:07:29,153 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:07:29,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:07:29,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-21 17:07:29,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2022-11-21 17:07:29,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 60 states have (on average 1.3166666666666667) internal successors, (79), 68 states have internal predecessors, (79), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (11), 8 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-21 17:07:29,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 102 transitions. [2022-11-21 17:07:29,209 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 102 transitions. Word has length 19 [2022-11-21 17:07:29,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:07:29,210 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 102 transitions. [2022-11-21 17:07:29,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:07:29,210 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 102 transitions. [2022-11-21 17:07:29,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-21 17:07:29,212 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:07:29,212 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:07:29,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:07:29,213 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:07:29,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:07:29,214 INFO L85 PathProgramCache]: Analyzing trace with hash 595736866, now seen corresponding path program 1 times [2022-11-21 17:07:29,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:07:29,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973455311] [2022-11-21 17:07:29,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:07:29,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:07:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:29,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:07:29,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:07:29,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973455311] [2022-11-21 17:07:29,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973455311] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:07:29,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:07:29,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:07:29,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611025764] [2022-11-21 17:07:29,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:07:29,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:07:29,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:07:29,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:07:29,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:07:29,324 INFO L87 Difference]: Start difference. First operand 79 states and 102 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:07:29,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:07:29,344 INFO L93 Difference]: Finished difference Result 119 states and 153 transitions. [2022-11-21 17:07:29,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:07:29,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-21 17:07:29,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:07:29,352 INFO L225 Difference]: With dead ends: 119 [2022-11-21 17:07:29,352 INFO L226 Difference]: Without dead ends: 70 [2022-11-21 17:07:29,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:07:29,355 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 17 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:07:29,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 156 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:07:29,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-21 17:07:29,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-11-21 17:07:29,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 62 states have internal predecessors, (72), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 6 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-21 17:07:29,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 90 transitions. [2022-11-21 17:07:29,366 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 90 transitions. Word has length 20 [2022-11-21 17:07:29,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:07:29,366 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 90 transitions. [2022-11-21 17:07:29,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:07:29,370 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 90 transitions. [2022-11-21 17:07:29,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-21 17:07:29,372 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:07:29,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:07:29,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 17:07:29,373 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:07:29,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:07:29,376 INFO L85 PathProgramCache]: Analyzing trace with hash 369626779, now seen corresponding path program 1 times [2022-11-21 17:07:29,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:07:29,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095546462] [2022-11-21 17:07:29,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:07:29,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:07:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:29,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:07:29,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:07:29,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095546462] [2022-11-21 17:07:29,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095546462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:07:29,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:07:29,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:07:29,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503560336] [2022-11-21 17:07:29,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:07:29,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:07:29,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:07:29,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:07:29,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:07:29,560 INFO L87 Difference]: Start difference. First operand 70 states and 90 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:07:29,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:07:29,729 INFO L93 Difference]: Finished difference Result 171 states and 224 transitions. [2022-11-21 17:07:29,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:07:29,731 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-21 17:07:29,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:07:29,733 INFO L225 Difference]: With dead ends: 171 [2022-11-21 17:07:29,733 INFO L226 Difference]: Without dead ends: 108 [2022-11-21 17:07:29,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:07:29,736 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 153 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:07:29,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 290 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:07:29,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-21 17:07:29,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 105. [2022-11-21 17:07:29,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 81 states have (on average 1.3580246913580247) internal successors, (110), 92 states have internal predecessors, (110), 13 states have call successors, (13), 10 states have call predecessors, (13), 10 states have return successors, (14), 9 states have call predecessors, (14), 13 states have call successors, (14) [2022-11-21 17:07:29,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 137 transitions. [2022-11-21 17:07:29,759 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 137 transitions. Word has length 25 [2022-11-21 17:07:29,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:07:29,759 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 137 transitions. [2022-11-21 17:07:29,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:07:29,760 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 137 transitions. [2022-11-21 17:07:29,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-21 17:07:29,761 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:07:29,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:07:29,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 17:07:29,762 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:07:29,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:07:29,763 INFO L85 PathProgramCache]: Analyzing trace with hash 779702988, now seen corresponding path program 1 times [2022-11-21 17:07:29,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:07:29,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413945954] [2022-11-21 17:07:29,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:07:29,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:07:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:29,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:07:29,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:07:29,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413945954] [2022-11-21 17:07:29,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413945954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:07:29,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:07:29,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 17:07:29,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586770548] [2022-11-21 17:07:29,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:07:29,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:07:29,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:07:29,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:07:29,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:07:29,985 INFO L87 Difference]: Start difference. First operand 105 states and 137 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:07:30,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:07:30,093 INFO L93 Difference]: Finished difference Result 289 states and 396 transitions. [2022-11-21 17:07:30,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:07:30,095 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-21 17:07:30,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:07:30,097 INFO L225 Difference]: With dead ends: 289 [2022-11-21 17:07:30,097 INFO L226 Difference]: Without dead ends: 191 [2022-11-21 17:07:30,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:07:30,100 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 61 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:07:30,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 357 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:07:30,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-11-21 17:07:30,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2022-11-21 17:07:30,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 146 states have (on average 1.3356164383561644) internal successors, (195), 165 states have internal predecessors, (195), 26 states have call successors, (26), 20 states have call predecessors, (26), 18 states have return successors, (31), 16 states have call predecessors, (31), 26 states have call successors, (31) [2022-11-21 17:07:30,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 252 transitions. [2022-11-21 17:07:30,155 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 252 transitions. Word has length 28 [2022-11-21 17:07:30,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:07:30,155 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 252 transitions. [2022-11-21 17:07:30,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:07:30,156 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 252 transitions. [2022-11-21 17:07:30,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-21 17:07:30,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:07:30,159 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:07:30,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 17:07:30,159 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:07:30,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:07:30,160 INFO L85 PathProgramCache]: Analyzing trace with hash -926135279, now seen corresponding path program 1 times [2022-11-21 17:07:30,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:07:30,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378515149] [2022-11-21 17:07:30,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:07:30,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:07:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:30,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:07:30,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:07:30,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378515149] [2022-11-21 17:07:30,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378515149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:07:30,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:07:30,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:07:30,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819082432] [2022-11-21 17:07:30,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:07:30,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:07:30,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:07:30,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:07:30,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:07:30,280 INFO L87 Difference]: Start difference. First operand 191 states and 252 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:07:30,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:07:30,390 INFO L93 Difference]: Finished difference Result 426 states and 580 transitions. [2022-11-21 17:07:30,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:07:30,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-21 17:07:30,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:07:30,397 INFO L225 Difference]: With dead ends: 426 [2022-11-21 17:07:30,398 INFO L226 Difference]: Without dead ends: 242 [2022-11-21 17:07:30,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:07:30,401 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 52 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:07:30,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 149 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:07:30,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-11-21 17:07:30,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 238. [2022-11-21 17:07:30,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 186 states have (on average 1.2903225806451613) internal successors, (240), 200 states have internal predecessors, (240), 27 states have call successors, (27), 26 states have call predecessors, (27), 24 states have return successors, (40), 24 states have call predecessors, (40), 27 states have call successors, (40) [2022-11-21 17:07:30,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 307 transitions. [2022-11-21 17:07:30,457 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 307 transitions. Word has length 30 [2022-11-21 17:07:30,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:07:30,457 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 307 transitions. [2022-11-21 17:07:30,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:07:30,458 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 307 transitions. [2022-11-21 17:07:30,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-21 17:07:30,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:07:30,461 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:07:30,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 17:07:30,461 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:07:30,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:07:30,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1951241998, now seen corresponding path program 1 times [2022-11-21 17:07:30,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:07:30,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517493165] [2022-11-21 17:07:30,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:07:30,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:07:30,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:30,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 17:07:30,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:30,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:07:30,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:07:30,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517493165] [2022-11-21 17:07:30,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517493165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:07:30,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:07:30,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 17:07:30,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416470240] [2022-11-21 17:07:30,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:07:30,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:07:30,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:07:30,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:07:30,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:07:30,605 INFO L87 Difference]: Start difference. First operand 238 states and 307 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 17:07:30,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:07:30,893 INFO L93 Difference]: Finished difference Result 290 states and 374 transitions. [2022-11-21 17:07:30,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 17:07:30,894 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2022-11-21 17:07:30,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:07:30,897 INFO L225 Difference]: With dead ends: 290 [2022-11-21 17:07:30,897 INFO L226 Difference]: Without dead ends: 288 [2022-11-21 17:07:30,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:07:30,908 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 124 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:07:30,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 334 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 17:07:30,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-11-21 17:07:30,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 271. [2022-11-21 17:07:30,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 211 states have (on average 1.2701421800947867) internal successors, (268), 231 states have internal predecessors, (268), 30 states have call successors, (30), 26 states have call predecessors, (30), 29 states have return successors, (50), 26 states have call predecessors, (50), 30 states have call successors, (50) [2022-11-21 17:07:30,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 348 transitions. [2022-11-21 17:07:30,970 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 348 transitions. Word has length 32 [2022-11-21 17:07:30,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:07:30,973 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 348 transitions. [2022-11-21 17:07:30,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 17:07:30,974 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 348 transitions. [2022-11-21 17:07:30,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-21 17:07:30,979 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:07:30,979 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:07:30,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 17:07:30,980 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:07:30,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:07:30,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1509571819, now seen corresponding path program 1 times [2022-11-21 17:07:30,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:07:30,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146018096] [2022-11-21 17:07:30,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:07:30,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:07:31,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:31,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 17:07:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:31,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 17:07:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:31,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:07:31,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:07:31,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146018096] [2022-11-21 17:07:31,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146018096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:07:31,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:07:31,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:07:31,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305246541] [2022-11-21 17:07:31,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:07:31,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:07:31,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:07:31,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:07:31,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:07:31,069 INFO L87 Difference]: Start difference. First operand 271 states and 348 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-21 17:07:31,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:07:31,314 INFO L93 Difference]: Finished difference Result 583 states and 743 transitions. [2022-11-21 17:07:31,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 17:07:31,315 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 46 [2022-11-21 17:07:31,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:07:31,319 INFO L225 Difference]: With dead ends: 583 [2022-11-21 17:07:31,320 INFO L226 Difference]: Without dead ends: 319 [2022-11-21 17:07:31,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:07:31,325 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 148 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:07:31,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 252 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 17:07:31,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-11-21 17:07:31,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 291. [2022-11-21 17:07:31,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 228 states have (on average 1.2543859649122806) internal successors, (286), 248 states have internal predecessors, (286), 30 states have call successors, (30), 26 states have call predecessors, (30), 32 states have return successors, (50), 28 states have call predecessors, (50), 30 states have call successors, (50) [2022-11-21 17:07:31,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 366 transitions. [2022-11-21 17:07:31,369 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 366 transitions. Word has length 46 [2022-11-21 17:07:31,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:07:31,370 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 366 transitions. [2022-11-21 17:07:31,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-21 17:07:31,370 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 366 transitions. [2022-11-21 17:07:31,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-21 17:07:31,372 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:07:31,372 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:07:31,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 17:07:31,373 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:07:31,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:07:31,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1923842840, now seen corresponding path program 1 times [2022-11-21 17:07:31,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:07:31,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674142593] [2022-11-21 17:07:31,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:07:31,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:07:31,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:31,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 17:07:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:31,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 17:07:31,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:31,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:07:31,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:07:31,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674142593] [2022-11-21 17:07:31,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674142593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:07:31,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:07:31,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:07:31,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111057981] [2022-11-21 17:07:31,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:07:31,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:07:31,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:07:31,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:07:31,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:07:31,536 INFO L87 Difference]: Start difference. First operand 291 states and 366 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-21 17:07:31,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:07:31,830 INFO L93 Difference]: Finished difference Result 611 states and 781 transitions. [2022-11-21 17:07:31,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 17:07:31,831 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2022-11-21 17:07:31,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:07:31,833 INFO L225 Difference]: With dead ends: 611 [2022-11-21 17:07:31,834 INFO L226 Difference]: Without dead ends: 327 [2022-11-21 17:07:31,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:07:31,836 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 125 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:07:31,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 319 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 17:07:31,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-11-21 17:07:31,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 297. [2022-11-21 17:07:31,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 234 states have (on average 1.2478632478632479) internal successors, (292), 254 states have internal predecessors, (292), 30 states have call successors, (30), 26 states have call predecessors, (30), 32 states have return successors, (50), 28 states have call predecessors, (50), 30 states have call successors, (50) [2022-11-21 17:07:31,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 372 transitions. [2022-11-21 17:07:31,875 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 372 transitions. Word has length 43 [2022-11-21 17:07:31,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:07:31,876 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 372 transitions. [2022-11-21 17:07:31,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-21 17:07:31,876 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 372 transitions. [2022-11-21 17:07:31,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-21 17:07:31,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:07:31,877 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:07:31,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 17:07:31,878 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:07:31,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:07:31,878 INFO L85 PathProgramCache]: Analyzing trace with hash 912725590, now seen corresponding path program 1 times [2022-11-21 17:07:31,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:07:31,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485320916] [2022-11-21 17:07:31,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:07:31,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:07:31,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:31,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 17:07:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:31,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 17:07:31,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:31,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:07:31,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:07:31,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485320916] [2022-11-21 17:07:31,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485320916] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:07:31,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:07:31,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 17:07:31,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902825316] [2022-11-21 17:07:31,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:07:31,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 17:07:31,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:07:31,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 17:07:31,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:07:31,973 INFO L87 Difference]: Start difference. First operand 297 states and 372 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-21 17:07:32,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:07:32,261 INFO L93 Difference]: Finished difference Result 582 states and 742 transitions. [2022-11-21 17:07:32,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 17:07:32,262 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2022-11-21 17:07:32,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:07:32,266 INFO L225 Difference]: With dead ends: 582 [2022-11-21 17:07:32,266 INFO L226 Difference]: Without dead ends: 292 [2022-11-21 17:07:32,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:07:32,271 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 174 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:07:32,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 309 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 17:07:32,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-11-21 17:07:32,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 241. [2022-11-21 17:07:32,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 190 states have (on average 1.2421052631578948) internal successors, (236), 206 states have internal predecessors, (236), 25 states have call successors, (25), 22 states have call predecessors, (25), 25 states have return successors, (37), 22 states have call predecessors, (37), 25 states have call successors, (37) [2022-11-21 17:07:32,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 298 transitions. [2022-11-21 17:07:32,304 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 298 transitions. Word has length 43 [2022-11-21 17:07:32,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:07:32,304 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 298 transitions. [2022-11-21 17:07:32,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-21 17:07:32,305 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 298 transitions. [2022-11-21 17:07:32,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-21 17:07:32,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:07:32,306 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:07:32,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 17:07:32,307 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:07:32,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:07:32,307 INFO L85 PathProgramCache]: Analyzing trace with hash -108342764, now seen corresponding path program 1 times [2022-11-21 17:07:32,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:07:32,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712461806] [2022-11-21 17:07:32,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:07:32,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:07:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:32,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 17:07:32,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:32,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 17:07:32,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:32,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:07:32,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:07:32,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712461806] [2022-11-21 17:07:32,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712461806] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:07:32,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:07:32,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:07:32,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954919190] [2022-11-21 17:07:32,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:07:32,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:07:32,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:07:32,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:07:32,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:07:32,447 INFO L87 Difference]: Start difference. First operand 241 states and 298 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-21 17:07:32,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:07:32,944 INFO L93 Difference]: Finished difference Result 541 states and 707 transitions. [2022-11-21 17:07:32,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 17:07:32,945 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2022-11-21 17:07:32,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:07:32,948 INFO L225 Difference]: With dead ends: 541 [2022-11-21 17:07:32,948 INFO L226 Difference]: Without dead ends: 375 [2022-11-21 17:07:32,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2022-11-21 17:07:32,950 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 194 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:07:32,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 429 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 17:07:32,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-11-21 17:07:32,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 364. [2022-11-21 17:07:32,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 287 states have (on average 1.2229965156794425) internal successors, (351), 308 states have internal predecessors, (351), 38 states have call successors, (38), 34 states have call predecessors, (38), 38 states have return successors, (68), 38 states have call predecessors, (68), 38 states have call successors, (68) [2022-11-21 17:07:32,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 457 transitions. [2022-11-21 17:07:32,997 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 457 transitions. Word has length 43 [2022-11-21 17:07:32,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:07:32,997 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 457 transitions. [2022-11-21 17:07:32,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-21 17:07:32,998 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 457 transitions. [2022-11-21 17:07:32,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-21 17:07:32,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:07:33,000 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:07:33,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 17:07:33,000 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:07:33,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:07:33,001 INFO L85 PathProgramCache]: Analyzing trace with hash 2046496720, now seen corresponding path program 1 times [2022-11-21 17:07:33,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:07:33,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83695581] [2022-11-21 17:07:33,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:07:33,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:07:33,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:33,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 17:07:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:33,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-21 17:07:33,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:33,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:07:33,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:33,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-21 17:07:33,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:33,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:07:33,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:33,190 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 17:07:33,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:07:33,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83695581] [2022-11-21 17:07:33,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83695581] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:07:33,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3449881] [2022-11-21 17:07:33,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:07:33,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:07:33,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4181d3e8-8e8f-4a1e-ad24-4ae1160e69c4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:07:33,199 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4181d3e8-8e8f-4a1e-ad24-4ae1160e69c4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:07:33,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4181d3e8-8e8f-4a1e-ad24-4ae1160e69c4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 17:07:33,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:33,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 17:07:33,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:07:33,474 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:07:33,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:07:33,617 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 17:07:33,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3449881] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:07:33,618 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:07:33,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 9 [2022-11-21 17:07:33,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436281964] [2022-11-21 17:07:33,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:07:33,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 17:07:33,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:07:33,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 17:07:33,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:07:33,620 INFO L87 Difference]: Start difference. First operand 364 states and 457 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (12), 6 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 17:07:34,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:07:34,368 INFO L93 Difference]: Finished difference Result 862 states and 1137 transitions. [2022-11-21 17:07:34,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-21 17:07:34,368 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (12), 6 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 76 [2022-11-21 17:07:34,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:07:34,373 INFO L225 Difference]: With dead ends: 862 [2022-11-21 17:07:34,373 INFO L226 Difference]: Without dead ends: 573 [2022-11-21 17:07:34,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 159 SyntacticMatches, 8 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=227, Invalid=585, Unknown=0, NotChecked=0, Total=812 [2022-11-21 17:07:34,375 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 251 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:07:34,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 571 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 17:07:34,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2022-11-21 17:07:34,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 492. [2022-11-21 17:07:34,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 384 states have (on average 1.2291666666666667) internal successors, (472), 414 states have internal predecessors, (472), 54 states have call successors, (54), 48 states have call predecessors, (54), 53 states have return successors, (102), 50 states have call predecessors, (102), 54 states have call successors, (102) [2022-11-21 17:07:34,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 628 transitions. [2022-11-21 17:07:34,437 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 628 transitions. Word has length 76 [2022-11-21 17:07:34,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:07:34,439 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 628 transitions. [2022-11-21 17:07:34,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (12), 6 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 17:07:34,439 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 628 transitions. [2022-11-21 17:07:34,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-21 17:07:34,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:07:34,442 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:07:34,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4181d3e8-8e8f-4a1e-ad24-4ae1160e69c4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-21 17:07:34,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4181d3e8-8e8f-4a1e-ad24-4ae1160e69c4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:07:34,648 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:07:34,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:07:34,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1016756628, now seen corresponding path program 2 times [2022-11-21 17:07:34,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:07:34,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834225848] [2022-11-21 17:07:34,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:07:34,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:07:34,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:07:34,678 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:07:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:07:34,746 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:07:34,746 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 17:07:34,748 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-21 17:07:34,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 17:07:34,754 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:07:34,759 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 17:07:34,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 05:07:34 BoogieIcfgContainer [2022-11-21 17:07:34,864 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 17:07:34,864 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 17:07:34,864 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 17:07:34,865 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 17:07:34,865 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:07:28" (3/4) ... [2022-11-21 17:07:34,867 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-21 17:07:34,988 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4181d3e8-8e8f-4a1e-ad24-4ae1160e69c4/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 17:07:34,988 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 17:07:34,989 INFO L158 Benchmark]: Toolchain (without parser) took 7571.37ms. Allocated memory was 138.4MB in the beginning and 249.6MB in the end (delta: 111.1MB). Free memory was 71.7MB in the beginning and 143.8MB in the end (delta: -72.0MB). Peak memory consumption was 40.6MB. Max. memory is 16.1GB. [2022-11-21 17:07:34,989 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 138.4MB. Free memory is still 106.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 17:07:34,989 INFO L158 Benchmark]: CACSL2BoogieTranslator took 568.04ms. Allocated memory was 138.4MB in the beginning and 207.6MB in the end (delta: 69.2MB). Free memory was 71.4MB in the beginning and 164.1MB in the end (delta: -92.7MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. [2022-11-21 17:07:34,990 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.95ms. Allocated memory is still 207.6MB. Free memory was 164.1MB in the beginning and 162.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 17:07:34,990 INFO L158 Benchmark]: Boogie Preprocessor took 46.27ms. Allocated memory is still 207.6MB. Free memory was 162.0MB in the beginning and 160.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 17:07:34,991 INFO L158 Benchmark]: RCFGBuilder took 526.72ms. Allocated memory is still 207.6MB. Free memory was 159.9MB in the beginning and 144.1MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-21 17:07:34,991 INFO L158 Benchmark]: TraceAbstraction took 6231.39ms. Allocated memory was 207.6MB in the beginning and 249.6MB in the end (delta: 41.9MB). Free memory was 143.1MB in the beginning and 152.2MB in the end (delta: -9.1MB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. [2022-11-21 17:07:34,992 INFO L158 Benchmark]: Witness Printer took 123.94ms. Allocated memory is still 249.6MB. Free memory was 152.2MB in the beginning and 143.8MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-21 17:07:34,994 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 138.4MB. Free memory is still 106.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 568.04ms. Allocated memory was 138.4MB in the beginning and 207.6MB in the end (delta: 69.2MB). Free memory was 71.4MB in the beginning and 164.1MB in the end (delta: -92.7MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.95ms. Allocated memory is still 207.6MB. Free memory was 164.1MB in the beginning and 162.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.27ms. Allocated memory is still 207.6MB. Free memory was 162.0MB in the beginning and 160.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 526.72ms. Allocated memory is still 207.6MB. Free memory was 159.9MB in the beginning and 144.1MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 6231.39ms. Allocated memory was 207.6MB in the beginning and 249.6MB in the end (delta: 41.9MB). Free memory was 143.1MB in the beginning and 152.2MB in the end (delta: -9.1MB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. * Witness Printer took 123.94ms. Allocated memory is still 249.6MB. Free memory was 152.2MB in the beginning and 143.8MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 339]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L133] int pumpRunning = 0; [L134] int systemActive = 1; [L344] int cleanupTimeShifts = 4; [L444] int waterLevel = 1; [L445] int methaneLevelCritical = 0; [L707] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L420] int retValue_acc ; [L421] int tmp ; [L425] FCALL select_helpers() [L426] FCALL select_features() [L427] CALL, EXPR valid_product() [L956] int retValue_acc ; [L959] retValue_acc = 1 [L960] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L427] RET, EXPR valid_product() [L427] tmp = valid_product() [L429] COND TRUE \read(tmp) [L431] FCALL setup() [L432] CALL runTest() [L411] CALL test() [L57] int splverifierCounter ; [L58] int tmp ; [L59] int tmp___0 ; [L60] int tmp___1 ; [L61] int tmp___2 ; [L64] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L66] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L68] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L74] tmp = __VERIFIER_nondet_int() [L76] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=1] [L78] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L462] COND TRUE waterLevel < 2 [L463] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L78] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=2] [L84] tmp___0 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, waterLevel=2] [L94] tmp___2 = __VERIFIER_nondet_int() [L96] COND TRUE \read(tmp___2) [L98] CALL startSystem() [L330] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L98] RET startSystem() [L113] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L141] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L148] COND TRUE \read(systemActive) [L150] CALL processEnvironment() [L196] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L199] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L214] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L170] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L173] COND TRUE ! pumpRunning [L175] CALL, EXPR isHighWaterLevel() [L293] int retValue_acc ; [L294] int tmp ; [L295] int tmp___0 ; [L299] CALL, EXPR isHighWaterSensorDry() [L524] int retValue_acc ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L527] COND FALSE !(waterLevel < 2) [L531] retValue_acc = 0 [L532] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L299] RET, EXPR isHighWaterSensorDry() [L299] tmp = isHighWaterSensorDry() [L301] COND FALSE !(\read(tmp)) [L304] tmp___0 = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L306] retValue_acc = tmp___0 [L307] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L175] RET, EXPR isHighWaterLevel() [L175] tmp = isHighWaterLevel() [L177] COND TRUE \read(tmp) [L179] CALL activatePump() [L224] pumpRunning = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L179] RET activatePump() [L214] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L150] RET processEnvironment() [L156] CALL __utac_acc__Specification4_spec__1() [L905] int tmp ; [L906] int tmp___0 ; [L910] CALL, EXPR getWaterLevel() [L515] int retValue_acc ; [L518] retValue_acc = waterLevel [L519] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=2, systemActive=1, waterLevel=2] [L910] RET, EXPR getWaterLevel() [L910] tmp = getWaterLevel() [L912] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=2, waterLevel=2] [L156] RET __utac_acc__Specification4_spec__1() [L113] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___2=1, waterLevel=2] [L66] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___2=1, waterLevel=2] [L68] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___2=1, waterLevel=2] [L74] tmp = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=2] [L84] tmp___0 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=2] [L94] tmp___2 = __VERIFIER_nondet_int() [L96] COND TRUE \read(tmp___2) [L98] CALL startSystem() [L330] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L98] RET startSystem() [L113] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L141] COND TRUE \read(pumpRunning) [L143] CALL lowerWaterLevel() [L450] COND TRUE waterLevel > 0 [L451] waterLevel = waterLevel - 1 VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L143] RET lowerWaterLevel() [L148] COND TRUE \read(systemActive) [L150] CALL processEnvironment() [L196] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L199] COND TRUE \read(pumpRunning) [L201] CALL, EXPR isMethaneAlarm() [L237] int retValue_acc ; [L241] CALL, EXPR isMethaneLevelCritical() [L483] int retValue_acc ; [L486] retValue_acc = methaneLevelCritical [L487] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=1] [L241] RET, EXPR isMethaneLevelCritical() [L241] retValue_acc = isMethaneLevelCritical() [L243] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=1] [L201] RET, EXPR isMethaneAlarm() [L201] tmp = isMethaneAlarm() [L203] COND FALSE !(\read(tmp)) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=1] [L209] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L170] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L173] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L188] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L209] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=1] [L150] RET processEnvironment() [L156] CALL __utac_acc__Specification4_spec__1() [L905] int tmp ; [L906] int tmp___0 ; [L910] CALL, EXPR getWaterLevel() [L515] int retValue_acc ; [L518] retValue_acc = waterLevel [L519] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L910] RET, EXPR getWaterLevel() [L910] tmp = getWaterLevel() [L912] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L156] RET __utac_acc__Specification4_spec__1() [L113] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L66] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L68] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L74] tmp = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L84] tmp___0 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L94] tmp___2 = __VERIFIER_nondet_int() [L96] COND TRUE \read(tmp___2) [L98] CALL startSystem() [L330] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L98] RET startSystem() [L113] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L141] COND TRUE \read(pumpRunning) [L143] CALL lowerWaterLevel() [L450] COND TRUE waterLevel > 0 [L451] waterLevel = waterLevel - 1 VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L143] RET lowerWaterLevel() [L148] COND TRUE \read(systemActive) [L150] CALL processEnvironment() [L196] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L199] COND TRUE \read(pumpRunning) [L201] CALL, EXPR isMethaneAlarm() [L237] int retValue_acc ; [L241] CALL, EXPR isMethaneLevelCritical() [L483] int retValue_acc ; [L486] retValue_acc = methaneLevelCritical [L487] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L241] RET, EXPR isMethaneLevelCritical() [L241] retValue_acc = isMethaneLevelCritical() [L243] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L201] RET, EXPR isMethaneAlarm() [L201] tmp = isMethaneAlarm() [L203] COND FALSE !(\read(tmp)) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L209] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L170] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L173] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L188] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L209] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L150] RET processEnvironment() [L156] CALL __utac_acc__Specification4_spec__1() [L905] int tmp ; [L906] int tmp___0 ; [L910] CALL, EXPR getWaterLevel() [L515] int retValue_acc ; [L518] retValue_acc = waterLevel [L519] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L910] RET, EXPR getWaterLevel() [L910] tmp = getWaterLevel() [L912] COND TRUE tmp == 0 [L914] CALL, EXPR isPumpRunning() [L248] int retValue_acc ; [L251] retValue_acc = pumpRunning [L252] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=0] [L914] RET, EXPR isPumpRunning() [L914] tmp___0 = isPumpRunning() [L916] COND TRUE \read(tmp___0) [L918] CALL __automaton_fail() [L339] reach_error() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 88 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.0s, OverallIterations: 12, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1318 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1299 mSDsluCounter, 3277 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2306 mSDsCounter, 325 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1788 IncrementalHoareTripleChecker+Invalid, 2113 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 325 mSolverCounterUnsat, 971 mSDtfsCounter, 1788 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 304 GetRequests, 202 SyntacticMatches, 9 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=492occurred in iteration=11, InterpolantAutomatonStates: 100, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 11 MinimizatonAttempts, 225 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 590 NumberOfCodeBlocks, 590 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 544 ConstructedInterpolants, 0 QuantifiedInterpolants, 1024 SizeOfPredicates, 4 NumberOfNonLiveVariables, 282 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 13 InterpolantComputations, 10 PerfectInterpolantSequences, 44/63 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-21 17:07:35,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4181d3e8-8e8f-4a1e-ad24-4ae1160e69c4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE